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Aorta injury

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https://www.readbyqxmd.com/read/28536220/exploring-inside-a-shaggy-aorta-using-non-obstructive-angioscopy
#1
Sei Komatsu, Satoru Takahashi, Yasuyuki Toyama, Kazuhisa Kodama
A shaggy aorta is reportedly related to atheromatous embolisation, which causes serious ischaemic damage to various organs. However, its characteristics are poorly understood. Non-obstructive angioscopy (NOA) has been developed to safely detect aortic plaques and injuries. A 70-year-old woman who was found to have a shaggy aorta on CT angiography underwent NOA for precise evaluation of vulnerable aortic plaques and injuries inside the aorta. Vulnerable aortic plaques included puff-like ruptures, chandelier-like ruptures and erosions seen throughout the aorta...
May 22, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28514894/successful-repair-of-acute-type-b-and-retrograde-type-a-aortic-dissection-with-kidney-ischemia
#2
Jeko M Madjarov, Michael G Katz, Hector Crespo-Soto, Svetozar Madzharov, Timothy Roush, Francis Robicsek
Acute dissection of thoracic aorta carries a risk of renal ischemia followed by the development of a kidney failure. The optimal surgical and nonsurgical management of these patients, timing of intervention, and the factors predicting renal recovery are not well delineated and remain controversial. We present a case of acute type B thoracic aortic dissection with left kidney ischemia. Evaluation of renal function was performed by the means of internationally accepted Risk, Injury, Failure, Loss of kidney function, End stage kidney disease and Acute Kidney Injury Network classifications for acute kidney injury, renal duplex sonography, and intravascular ultrasound that demonstrated left renal artery dissection with a flap completely compressing the true lumen...
January 1, 2017: Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28500865/dihydromyricetin-ameliorates-atherosclerosis-in-ldl-receptor-deficient-mice
#3
Ting Ting Liu, Yi Zeng, Kun Tang, XueMeng Chen, Wei Zhang, Xiao Le Xu
BACKGROUND AND AIMS: Dihydromyricetin, the most abundant flavonoid in Ampelopsis grossedentata, exerts numerous pharmacological activities, including anti-inflammatory, antioxidant, hepatoprotective, and lipid regulatory activities; however, its protective effect against atherosclerosis remains poorly understood. The aim of the present study was to evaluate the effects of dihydromyricetin on high fat diet (HFD)-induced atherosclerosis using LDL receptor deficient (LDLr(-/-)) mice. METHODS: Blood samples were collected for determination of serum lipid profiles, oxidized LDL (ox-LDL) and pro-inflammatory cytokines...
May 5, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28499862/successful-revascularization-of-aortic-arch-in-a-39-year-old-blunt-trauma-patient-with-acute-diffuse-axonal-injury-without-the-use-of-systemic-anticoagulation
#4
Andrew M Abi-Chaker, Keith M Jones, Priscilla Sanchez, Jordan Sasson, Xiaoyi Li, Jorge Rey
BACKGROUND: Blunt traumatic aortic injury is the second leading cause of death in trauma patients age 4 to 34. Of the patients that are able to receive treatment, mortality rates as high as 40% have been reported. Endovascular repair options have allowed for more expeditious repairs with reduced iatrogenic trauma; however, when the injury involves the ascending aorta or arch, current endografts lack fenestrations needed for cerebral blood flow. Traditionally, on pump cardiopulmonary bypass with systemic anticoagulation has been used to repair these injuries...
May 9, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28496045/cholic-acid-enhances-visceral-adiposity-atherosclerosis-and-nonalcoholic-fatty-liver-disease-in-microminipigs
#5
Sohsuke Yamada, Hiroaki Kawaguchi, Tomonobu Yamada, Xin Guo, Kei Matsuo, Taiji Hamada, Naoki Miura, Takashi Tasaki, Akihide Tanimoto
AIM: We have recently established a novel swine model for studies of atherosclerosis using Microminipigs(TM) (µMPs) fed a high-fat/high-cholesterol diet (HcD). Using this swine model, we re-evaluated the effects of dietary cholic acid (CA) on serum lipid profile, atherosclerosis and hepatic injuries. METHODS: The µMPs were fed HcD supplemented with 0.7% CA (HcD+CA) for eight weeks, and the effect of CA on serum lipoprotein levels, expression of oxidative stress markers, adiposity and lesion formation in the aorta, liver, and other organs was investigated...
May 11, 2017: Journal of Atherosclerosis and Thrombosis
https://www.readbyqxmd.com/read/28473723/high-resolution-morphological-approach-to-analyse-elastic-laminae-injuries-of-the-ascending-aorta-in-a-murine-model-of-marfan-syndrome
#6
Júlia López-Guimet, Jordi Andilla, Pablo Loza-Alvarez, Gustavo Egea
In Marfan syndrome, the tunica media is disrupted, which leads to the formation of ascending aortic aneurysms. Marfan aortic samples are histologically characterized by the fragmentation of elastic laminae. However, conventional histological techniques using transverse sections provide limited information about the precise location, progression and 3D extension of the microstructural changes that occur in each lamina. We implemented a method using multiphoton excitation fluorescence microscopy and computational image processing, which provides high-resolution en-face images of segmented individual laminae from unstained whole aortic samples...
May 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28473473/the-emerging-role-of-nadph-oxidase-nox5%C3%A2-in-vascular-disease
#7
EDITORIAL
Jay C Jha, Anna M D Watson, Geetha Mathew, Lisanne C de Vos, Karin Jandeleit-Dahm
Oxidative stress is a consequence of up-regulation of pro-oxidant enzyme-induced reactive oxygen species (ROS) production and concomitant depletion of antioxidants. Elevated levels of ROS act as an intermediate and are the common denominator for various diseases including diabetes-associated macro-/micro-vascular complications and hypertension. A range of enzymes are capable of generating ROS, but the pro-oxidant enzyme family, nicotinamide adenine dinucleotide phosphate (NADPH) oxidases (NOXs), are the only enzymes known to be solely dedicated to ROS generation in the vascular tissues, kidney, aortas and eyes...
May 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28471046/a-first-in-human-evaluation-of-a-novel-contrast-media-saving-device
#8
James Sapontis, Garry Barron, Sujith Seneviratne, Georg Fuernau, Ingo Eitel, Jakob Ledwoch, Holger Thiele, Mohammed Saad, Suzanne de Waha, Janine Poess, Steffen Desch
OBJECTIVES: This study evaluated the usability and contrast volume savings of the novel DyeVert™ System. BACKGROUND: During coronary diagnostic and interventional procedures, a substantial portion of injected contrast does not contribute to vessel imaging due to reflux into the ascending aorta. Contrast volume is the primary physician modifiable risk factor for prevention of contrast-induced acute kidney injury CI-AKI which is a frequent complication in patients undergoing coronary angiographic procedures and is related to increases in morbidity, mortality, and healthcare costs...
May 4, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28459798/resuscitative-endovascular-balloon-occlusion-of-the-aorta-reboa-for-major-abdominal-venous-injury-in-a-porcine-hemorrhagic-shock-model
#9
Michael S Lallemand, Donald M Moe, John M McClellan, Joshua P Smith, Leo Daab, Shannon Marko, Nam Tran, Benjamin Starnes, Matthew J Martin
BACKGROUND: Resuscitative Endovascular Balloon Occlusion of the Aorta (REBOA) is a rescue maneuver for unstable patients with non-compressible hemorrhage below the diaphragm. The efficacy of REBOA in the setting a major abdominal venous injury is unknown. Our objective was to examine the use of REBOA in a large animal model of major abdominal venous injury, and characterize any impact on the hemodynamics, rate and volume of hemorrhage, and survival. METHODS: Ten swine (35-55kg) underwent a controlled and validated hemorrhage and ischemia/reperfusion injury protocol to produce shock physiology...
April 28, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28455887/human-adipose-stromal-cell-therapy-improves-survival-and-reduces-renal-inflammation-and-capillary-rarefaction-in-acute-kidney-injury
#10
Jason A Collett, Dmitry O Traktuev, Purvi Mehrotra, Allison Crone, Stephanie Merfeld-Clauss, Keith L March, David P Basile
Damage to endothelial cells contributes to acute kidney injury (AKI) by causing impaired perfusion, while the permanent loss of the capillary network following AKI has been suggested to promote chronic kidney disease. Therefore, strategies to protect renal vasculature may impact both short-term recovery and long-term functional preservation post-AKI. Human adipose stromal cells (hASCs) possess pro-angiogenic and anti-inflammatory properties and therefore have been tested as a therapeutic agent to treat ischaemic conditions...
April 28, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28452882/field-and-en-route-reboa-a-feasible-military-reality
#11
Viktor A Reva, Tal Hörer, Andrey I Makhnovskiy, Mikhail V Sokhranov, Igor M Samokhvalov, Joseph J DuBose
BACKGROUND: Severe non-compressible torso hemorrhage (NCTH) remains a leading cause of potentially preventable death in modern military conflicts. Resuscitative endovascular occlusion of the aorta (REBOA) has demonstrated potential as an effective adjunct to the treatment of NCTH in the civilian early hospital and even pre-hospital settings - but the application of this technology for military pre-hospital use has not been well described. We aimed to assess the feasibility of both field and en route pre-hospital REBOA in the military exercise setting simulating a modern armed conflict...
April 27, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28452874/a-retrievable-rescue-stent-graft-and-radiofrequency-positioning-for-rapid-control-of-noncompressible-hemorrhage
#12
Youngjae Chun, Sung Kwon Cho, William C Clark, William R Wagner, Xinzhu Gu, Amit D Tevar, Ryan M McEnaney
BACKGROUND: Non-compressible hemorrhage of the torso remains a challenging surgical dilemma. Stent graft repair requires endovascular expertise, imaging, and inventory that are not available within the critical window of massive hemorrhage. We developed a retrievable stent graft for rapid hemorrhage. We further investigated a radiofrequency (RF) positioning approach as a possible alternative to the logistics of fluoroscopy. METHODS: A retrievable stent graft was constructed with a novel "petal and stem" design from nitinol and covered with a sleeve of electrospun polyurethane...
April 27, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28452604/effects-of-dexmedetomidine-on-renal-tissue-after-lower-limb-ischemia-reperfusion-injury-in-streptozotocin-induced-diabetic-rats
#13
Meral Erdal Erbatur, Şaban Cem Sezen, Aslıhan Cavunt Bayraktar, Mustafa Arslan, Mustafa Kavutçu, Muhammed Enes Aydın
AIM: The aim of this study was to investigate whether dexmedetomidine - administered before ischemia - has protective effects against lower extremity ischemia reperfusion injury that induced by clamping and subsequent declamping of infra-renal abdominal aorta in streptozotocin-induced diabetic rats. MATERIAL AND METHODS: After obtaining ethical committee approval, four study groups each containing six rats were created (Control (Group C), diabetes-control (Group DM-C), diabetes I/R (Group DM-I/R), and diabetes-I/R-dexmedetomidine (Group DM-I/R-D)...
December 2017: Libyan Journal of Medicine
https://www.readbyqxmd.com/read/28444875/methylglyoxal-induced-apoptosis-is-dependent-on-the-suppression-of-c-flipl-expression-via-down-regulation-of-p65-in-endothelial-cells
#14
Ji Hoon Jang, Eun-Ae Kim, Hye-Jin Park, Eon-Gi Sung, In-Hwan Song, Joo-Young Kim, Chang-Hoon Woo, Kyung-Oh Doh, Kook Hyun Kim, Tae-Jin Lee
Methylglyoxal (MGO) is a reactive dicarbonyl metabolite of glucose, and its plasma levels are elevated in patients with diabetes. Studies have shown that MGO combines with the amino and sulphhydryl groups of proteins to form stable advanced glycation end products (AGEs), which are associated with vascular endothelial cell (EC) injury and may contribute to the progression of atherosclerosis. In this study, MGO induced apoptosis in a dose-dependent manner in HUVECs, which was attenuated by pre-treatment with z-VAD, a pan caspase inhibitor...
April 26, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28430760/resuscitative-endovascular-balloon-occlusion-of-the-aorta-or-resuscitative-thoracotomy-with-aortic-clamping-for-noncompressible-torso-hemorrhage-a-retrospective-nationwide-study
#15
Shotaro Aso, Hiroki Matsui, Kiyohide Fushimi, Hideo Yasunaga
BACKGROUND: Resuscitative endovascular balloon occlusion of the aorta (REBOA) is an emerging treatment for noncompressible torso hemorrhage. It remains unclear if REBOA is superior to resuscitative thoracotomy with aortic cross-clamping (RT) in terms of improving outcomes. This study compared in-hospital outcomes between REBOA and RT in trauma patients with uncontrolled hemorrhagic shock, using data from a national inpatient database in Japan. METHODS: Using the Diagnosis Procedure Combination database, we identified patients who received REBOA or RT within 1 day after admission from July 1, 2010, to March 31, 2014...
May 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28429535/a-cross-circulated-bicephalic-model-of-head-transplantation
#16
Peng-Wei Li, Xin Zhao, Yun-Long Zhao, Bing-Jian Wang, Yang Song, Zi-Long Shen, Hong-Jun Jiang, Hai Jin, Sergio Canavero, Xiao-Ping Ren
AIMS: A successful cephalosomatic anastomosis ("head transplant") requires, among others, the ability to control long-term immune rejection and avoidance of ischemic events during the head transference phase. We developed a bicephalic model of head transplantation to study these aspects. METHODS AND RESULTS: The thoracic aorta and superior vena cava of a donor rat were anastomosed with the carotid artery and extracorporeal veins of a recipient rat by vascular grafts...
June 2017: CNS Neuroscience & Therapeutics
https://www.readbyqxmd.com/read/28424126/the-novel-use-of-resuscitative-endovascular-balloon-occlusion-of-the-aorta-to-explore-a-retroperitoneal-hematoma-in-a-hemodynamically-unstable-patient
#17
Martin D Rosenthal, Ahsan Raza, Stephanie Markle, Chasen A Croft, Alicia M Mohr, R Stephen Smith
Balloon occlusion of the aorta was first described by C.W. Hughes in 1954, when it was used as a tamponade device for three wounded soldiers during the Korean War suffering from intra-abdominal hemorrhage. Currently, the device is indicated in trauma patients as a surrogate for resuscitative thoracotomy. Brenner et al. reported a case series describing the use of resuscitative endovascular balloon occlusion of the aorta (REBOA) in advanced hemorrhagic shock. Their conclusion was that "it is a feasible method for proximal aortic control...
April 1, 2017: American Surgeon
https://www.readbyqxmd.com/read/28422912/vascular-complications-from-resuscitative-endovascular-balloon-occlusion-of-the-aorta-reboa-life-over-limb
#18
John R Taylor, John A Harvin, Clay Martin, John B Holcomb, Laura J Moore
BACKGROUND: Vascular complications from resuscitative endovascular balloon occlusion of the aorta (REBOA) have been reported as high as 13% with some patients requiring lower extremity amputation. We sought to review our institutions series of REBOA and assess our vascular complications. METHODS: Retrospective review of all patients undergoing REBOA from October 2011 through July 2016. Data was gathered from the Memorial Hermann Trauma registry and the hospital electronic medical records...
April 18, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28419207/ckii-sirt1-sm22%C3%AE-loop-evokes-a-self-limited-inflammatory-response-in-vascular-smooth-muscle-cells
#19
Ya-Nan Shu, Li-Hua Dong, Han Li, Qian-Qian Pei, Sui-Bing Miao, Fan Zhang, Dan-Dan Zhang, Rong Chen, Ya-Juan Yin, Yan-Ling Lin, Zhen-Ying Xue, Pin Lv, Xiao-Li Xie, Li-Li Zhao, Xi Nie, Peng Chen, Mei Han
Aims: Sirtuin 1 (SIRT1) inhibits nuclear factor kappa B (NF-κB) activity in response to the inflammatory cytokine tumour necrosis factor alpha (TNF-α). Smooth muscle (SM) 22α is a phosphorylation-regulated suppressor of IKK-IκBα-NF-κB signalling cascades in vascular smooth muscle cells (VSMCs). Sm22α knockout results in increased expression of pro-inflammatory genes in the aortas which are controlled by NF-κB. This study aimed to investigate the relationship between SM22α and SIRT1 in the control of vascular inflammation...
April 16, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28400216/high-mortality-rates-after-both-open-surgical-and-endovascular-thoracic-aortic-interventions-in-patients-with-end-stage-renal-disease
#20
Nathan L Liang, Theodore H Yuo, Georges E Al-Khoury, Eric S Hager, Michel S Makaroun, Michael J Singh
BACKGROUND: Morbidity and mortality have improved with the evolution of endovascular techniques (thoracic endovascular aortic repair [TEVAR]) for thoracic aortic disease, but results after aortic intervention in patients with end-stage renal disease (ESRD) remain unclear. The objective of this study was to evaluate outcomes of open and endovascular descending thoracic aortic repair in dialysis-dependent patients. METHODS: We identified 352 patients with ESRD on dialysis undergoing open repair (n = 136) or TEVAR (n = 216) of the thoracic aorta from 2005 to 2008 using the United States Renal Data System database...
April 8, 2017: Journal of Vascular Surgery
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